Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '895101e30832748aea2eb1af5b6d0662e8000f67f28310c04fcb8ad076c0b74b' 
  AND token = 'C9Z98JmzusciqNOfoL+5TPveFX5NKU3Sjk7HgP6AQMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}